Went on Forbidden Journey last Thursday during the morning previews and I will say that this is an amazing ride...I looked over at the other ride vehicles in motion and the whole KUKA arm thing really is a great technological advancement. The ride seemed very fluid and smooth even though you are twisting and turning frequently.
With that said, I was a little disappointed overall. I wasn't a huge fan of the screen-to-set thing. In my mind I was picturing all of these elaborate sets of Hogwarts, etc. and they just weren't there. The dropping spiders were not scary to me (and I seriously hate spiders) and the dementors didn't do it for me either. I did like the fact that everything is right up in your face...but maybe that contributes to the not-as-scary factor (everything is so close it just doesn't look AS real).
Don't get me wrong...I had a huge smile on my face during the entire ride and I think it is a great addition to Islands of Adventure. And I only rode it once because they closed the line before we could ride it again so maybe I didn't get the whole scope of the thing. I think I just built up this huge expectation in my head and therefore was slightly (and let me emphasize slightly) let down. I just remember the first time I rode Spider Man and I remember thinking "WOW...that was just amazing!" and I didn't really get that same feeling after riding Forbidden Journey. But I don't think anyone can argue that this ride is awesome.
The queue is an attraction in itself and is very well done...it is incredibly detailed and in my opinion the best line I have ever waited in. You almost want the line to go slow so you can take everything in.
The shops were also amazing and I love the fact that there is nothing that says Universal or anything theme-park-y in the whole land. Everything is authentic to Harry Potter...I wish Disney would have more land-specific merchandise like this...it transports you to another world. I especially liked Honeydukes...absolutely adorable! The Peppermint Toads were really good...they taste like Andes mints.
One word of advice...we bought a chocolate wand and after being out in the sun for a few hours it melted a little and broke in half. We had to buy it early due to the previews but I would advise buying anything chocolate-related towards the end of the day once the land opens full time.
Overall...this land is amazing and really makes you feel like you are in Harry Potter's world. I think this is definitely Universal's best work.